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- Integrated episode data Visualization: This is an alternative way to access integrated Episode data visualization, already described in "AH Episode Chapter".
- Waveform Viewer Guide: This is
- Waveform viewer is a seismic waveform processing tool. The User may observe, interact and elaborate waveforms corresponding to signals recorded by seismic stations and perform various actions such as phase determination and point picking. These pickings are saved by the system and can be further used in waveform-based services such as Spectral Analysis, Source Localization and Moment Tensor Inversion. The options provided by the waveform viewer are described in Figure 5:
When clicking on one waveform, additional options appear.The user selects the component(s) that he/she wishes to be displayed in the screen. East-West, North-South, Vertical.
- Horizontal zooming in-out.
- Vertical zooming in-out.
- Undo zooming.
- Select between phase (start and end point) picking and single point picking.
- Only P-wave is enabled in this Application. (In other Applications, selection between P-wave and S-wave picking are possible).
- Undo picking.
- Horizontal zooming tool. The User may alternatively zoom in-out the waveform by clicking on this small vertical bar and move the
- mouse left-right.
- Collapse the details of the waveform.
- Move the selected (zoomed) part of the waveform left-right.
Note that different
Picking Phase:
The User has to pick a starting and an ending point from the Vertical component of a station (**Z channel - see Figure 5). Then, he/she has to repeat this picking for the other stations.
NOTE: Although it is not necessary to pick P-wave arrivals in all of the waveforms, a minimum of 8 picks is required for the service to proceed to the calculations (stated also at the bottom of Figure 5). The number of the seismograms and P-wave phases picked, are updated, each time the User selects makes a new picking.
- Maps Guide: Basemaps
- Plot Properties: Basic plot handling
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Overview
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